The mole

A refinery removes sulfur dioxide from its exhaust gases using calcium carbonate, CaCO3). For one hour, 960 kg of SO$_2$ is produced. The reaction is:

$CaCO_3 + SO_2 \rightarrow CaSO_3 + CO_2$

The cost of CaCO$_3$ is \$0.10 per kg. What is the minimum cost of CaCO$_3$ needed per hour? (Molar masses: CaCO$_3$ = 100 g/mol, SO$_2$ = 64 g/mol)